/**
 * Copyright 2024 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { Pipe, PipeTransform } from '@angular/core';

@Pipe({
  name: 'rainbow',
})
export class RainbowPipe implements PipeTransform {
  transform(
    value: number,
    baseHue: number,
    saturation: string,
    brightness: string,
  ): string {
    const PRIME_MULTIPLIER = 103;
    const hue = (baseHue + value * PRIME_MULTIPLIER) % 360;
    return `hsl(${hue}deg,${saturation},${brightness})`;
  }
}
